Body-bolster.



PATENTED NOV. 21, 1905.

'1. M. GALLAGHER.

BODY BOLSTBR.

APPLICATION FILED APRA, 1905.

UNITED STATES PATENT orrrcn.

BODY-BOLSTER.

Specification of Letters Patent.

Patented Nov. 21, 1905.

Application filed April 4:. 1905. Serial No. 253,901.

To (LZZ whom it may concern.-

Be it known that I, THoMAs M. GALLAGHER, a citizen of the United States, and a resident of Old Orchard, St. Louis county, Missouri, have invented certain new and useful Improvements in Body-Bolsters, of which the following is a specification containing a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention relates to bolsters for railway-cars; and it consists in the novel construction hereinafter specified and claimed.

The object of my invention is to provide an improved body-bolster which will permit the removal or renewal of the draft-timberswithout removing the bolster from the car.

The further object of my invention is to provide a bolster with an improved compression and center plate which shall be so constructed that it will be retained in the recess in the bottom of the bolster even should its bolts become loose and drop out.

The further object is to provide an-improved bolster with a compression-plate recess having curved or circular walls whereby thecorresponding curved surfaces of the compression-plate will engage the projecting walls of the said recess and prevent straining or shearing of the compression-plate bolts.

In the drawings, Figure 1 is a side elevation of a bolster embodying my invention. Fig. 2 is an inverted plan of the same. Fig. 3 is a cross-section taken on the line3 3 of Fig. 1. Fig. 4 is a bottom plan view of the removable combined compression-plate and center-bearing detached from the bolster.

5 indicates the tension member of the bolster, and 6 the compression member thereof, the latter having the usual side bearings 7.

The bolster preferably has the customary I-beam cross-section, the numeral 8 representing the web thereof. The bolster is provided in its under side with a compressionplate recess 9, the vertical walls of which are curved laterally of the bolster. The Walls of said recess should be accurately bored or turned, in order to fit the correspondinglyshaped combined compression-plate and center-bearing, the ends of which are curved to fit said curved walls of said recess. The said compression plate 'and center bearing, 10, when in position, will be securely held in place by the weight imposed upon it and may be successfully run without any fastening-bolts, although I have shown a series of fasteningbolts 11 passing through the holes 12 in said plate and through corresponding holes in the compression member of the bolster; yet should these bolts become loose and drop out no damage will be done, as the said plate will be retained in its circular recess by the curved projecting walls thereof. These curved projecting walls also take all the strain off of the bolts 11 and will positively prevent shearing of the bolts when the car carrying the bolster is heavily bumped by cars or engines. The strain or side thrust is taken almost entirely by the curved walls of the said circular seat. In a plane above the compression-plate recess 9 are the usual draft-timber recesses.

1n placing or removing the draft-timbers it will only. be necessary to detach the compression-plate 10, when the draft-timbers can be moved as desired within their recesses 13 without even removing the draft-timber bolts, and in no case will it be necessary to remove the bolster from the car in order to repair or replace the draft-timbers.

1A indicates the central part of the bolster, which projects downwardly from the tension member 5 at a point between the draft-timber recesses 13, and said portion 14: is provided with laterally-projecting flanges 15, and these flanges fit in a recess 17, formed in the upper face of the said combined compression-plate and center-bearing.

What I claim is 1. The improved cast-metal bolster, having in its under side the usual draft-timber and removable compression-plate recesses,the vertical walls of said compression-plate recesses being curved; substantially as specified.

2. The improved castmetal bolster, having in its under side the usual draft-timber and removable compression-plate recesses,the vertical walls of said compression-plate recesses being curved; and a combined compressionplate and center-bearing havingits ends curved and located within the said compression-plate recess; substantially as specified.

3. The improved cast-metal bolster, having in its under side the usual draft-timber and removable compression-plate recesses,the vertical walls of said compression-plate recesses being curved; and a combined compressionplate and center-bearing, having curved ends, which are located Within said compressionplate recess at a point exterior of the outer Walls of the said draft-timber recesses, said compression-plate itself being recessed upon its upper side to receive the flanged central part of the bolster; substantially as specified.

In testimony whereof I have signed my name to this specification in presence of tWo subscribing Witnesses.

THOMAS M. GALLAGHER.

Witnesses:

EDW. M. HARRINGTON, JOHN C. HIeDoN. 

